No word on a release date yet or price, but they claim this is just a prototype and the final product may vary.

Tformers board summarizes it pretty well: (1)back end looks better than the front, (2)too much space between the cab and trailer and (3)it seems that Roller IS the back wheels of the trailer...the fold out base can sit flat.

The UM City commander trailer was a good investment. But this? It is too soon to tell.